Experimental Study and Modeling of Sorption Isotherms of Kabar Sid EL Cheikh Capparis Spinosa L. from Bechar (South West Algeria)

The moisture contents of balance of desorption and adsorption of Kabar Sid El Cheikh leaves (Capparis spinosa .L) were determined at 30, 40, and 50 °C using the static gravimetric method. The balance was obtained after 12 days of desorption and 8 days of adsorption. The effect of thermal hysteresis is observed in the range of the tested temperatures. In one hand, for the modeling of sorption isotherms, on the other hand, for the prediction of the hygroscopic behavior, during storage or drying; two mathematical models were tested. The GAB model with three parameters has given best results according to the experimental points in a rather important domain of the activities of the water.